Active vibration control of smart plates using directional actuation and sensing capability of piezoelectric composites

The efficacy of directional actuation and sensing using piezoelectric fiber-reinforced composite (PFRC) actuators and sensors in active vibration suppression is examined for the first time for smart fiber metal laminate (FML) plates. A recently developed quadrilateral element with four physical nodes and one electric node, based on an efficient layer-wise theory, is employed for the structural analysis. The linear quadratic Gaussian (LQG) control strategy is employed for the active vibration control. The optimal direction of PFRC fibers to achieve the minimum control voltage is obtained for skew plates of cantilever and simply supported boundary conditions for different skew angles.